Method and apparatus to identify asbestos and aramid

Details Method and apparatus to identify asbestos and aramid Method and apparatus to identify asbestos and aramid

1998-10-30

2000-11-07

Metjahic, Safet

Electricity: measuring and testing

A material property using electrostatic phenomenon

Frictionally induced

324452, G01R 2726

Patent

active

061442089

ABSTRACT:
A method for identifying and/or differentiating between asbestos materials and aramid materials comprises the steps of rubbing an area of a surface of a material (44) to be identified, with an acrylic reference material (28), measuring the polarity of the generated electrostatic charge and comparing the polarity with polarities of charge generated from surfaces of known asbestos and aramid materials.

REFERENCES:
patent: 3866114 (1975-02-01), Johnston
patent: 3999119 (1976-12-01), Bares
patent: 4479090 (1984-10-01), Frater et al.
patent: 5341103 (1994-08-01), Dasgupta et al.
patent: 5541518 (1996-07-01), Babbitt et al.
patent: 5563516 (1996-10-01), Babbitt et al.
patent: 5608326 (1997-03-01), Mucci et al.

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